Drum washing machine



FIG. 1 is a perspective view of a drum washing machine, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is another side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is another perspective view thereof in an alternate configuration.

The broken lines in the figures illustrating portions of the drum washing machine form no part of the claimed design. 

CLAIM The ornamental design for a drum washing machine, as shown and described. 